I had a crap little halfords jack which i had trouble getting under the front of the sill to jack up on the lollipop and that was on a non lowered car. I bought those rubber pads that slot in the sill but lm not keen to do that. For speed l like to jack the rear up on the diff. The Sealey Yankee is good as it is long as well as being low and fast at lifting.. there seem to be a lot of identical ones available for around £120- £130 which although different makes l suspect are all the same jack from china and companies put their own identity on them.
On another note my brother works in an independent car spares shop and when he saw l had bought a Sealey he had a go at me because every Sealy jack he has sold has been returned within the 12 month warranty due to not staying up.. you live and learn so l just hope there was a dodgy batch and mine will be okay!!!